The OnePlus 13T, the first “T” model in three years, promises big things in a small package. Slightly smaller than the flagship OnePlus 13, with a 6.32-inch OLED display and weighing 185 grams, the 13T packs a punch. OnePlus recently announced on Weibo that it will feature a groundbreaking 6,260mAh battery, surpassing the previous record held by the OnePlus Ace 3 Pro (6,100mAh). This massive battery capacity translates to extended usage and screen time. However, the 13T isn’t the only phone boasting substantial battery life. Let’s compare it to four other big-battery phones currently on the market.
Oppo Find X8 Ultra: Fast Charging Champion
The camera on the Oppo Find X8 Ultra in White
Like the OnePlus Ace 3 Pro, the Oppo Find X8 Ultra comes close to the 13T’s battery capacity with its 6,100mAh battery, effectively complemented by the Snapdragon 8 Elite processor. Battery life varies depending on usage, potentially lasting up to 48 hours. Heavy screen time and camera use will naturally reduce this, potentially down to around 30 hours. The Find X8 Ultra shines in its charging speed, achieving a full charge in just 36 minutes using the 100W SuperVOOC charger. A quick five-minute charge provides 24%, while 15 minutes boosts it to 62%. Unfortunately, the Find X8 Ultra is currently exclusive to the Chinese market, making it difficult to acquire elsewhere.
Google Pixel 9 Pro XL: Large Screen, Large Battery
Someone holding the Google Pixel 9 Pro XL.
The Google Pixel 9 Pro XL, the largest in the Pixel 9 lineup, features 16GB of RAM and a substantial 5,060mAh battery. However, battery size doesn’t always equate to exceptional battery life. With heavy usage involving video streaming, social media, and gaming, expect 15-16 hours. Lighter usage can extend battery life up to 36 hours. Charging speeds are less impressive. With 37W wired charging, it takes about 90 minutes to reach a full charge, with 70% achieved in around 30 minutes. While it supports up to 12W wireless charging with Qi-compatible chargers, this remains comparatively slow.
Samsung Galaxy S25 Ultra: Balancing Power and Efficiency
The back of the Samsung Galaxy S25 Ultra.
The Samsung Galaxy S25 Ultra boasts a 5,000mAh battery, offering decent battery life of up to 48 hours with moderate use (around three hours of screen time daily, excluding gaming). Intensive tasks like gaming, video recording, and AI applications will significantly reduce this to 24 hours or less. Its 45W wired charging capabilities provide a full charge in 65 minutes, 75% in 30 minutes, and 50% in 20 minutes, offering reasonable charging speeds for a battery of this size.
iPhone 16 Pro Max: Optimized Battery Performance
iPhone 16 Pro Max in Desert Titanium.
Despite its large size within the iPhone 16 lineup, the iPhone 16 Pro Max houses a 4,685mAh battery. While not exceptionally large, its battery life impresses with up to 48 hours on a single charge, including around five hours of daily screen time (excluding gaming). Wired charging provides 27W to 30W, depending on the charger, delivering a 50% charge in 30 minutes and a full charge in about an hour. MagSafe charging offers similar speeds at 25W. This represents efficient performance for a moderately sized battery.
Conclusion: OnePlus 13T Faces Stiff Competition
The OnePlus 13T’s substantial battery certainly sets it apart. However, it enters a competitive landscape where other devices offer comparable battery capacities and varying charging speeds. The ultimate choice depends on individual priorities, balancing battery size, charging technology, and overall device features.
